cnfgen -q randkcnf 4 $VARIABLES $CLAUSES
Watch: Timelapse shows Nasa rocket's 12-hour journey to launch pad，详情可参考91视频
Backpressure is strict by default. When a buffer is full, writes reject rather than silently accumulating. You can configure alternative policies – block until space is available, drop oldest, drop newest – but you have to choose explicitly. No more silent memory growth.，这一点在旺商聊官方下载中也有详细论述
provide suggestions for optimizing individual pages